/Engine/Source/Runtime/Core/Public/Math/Quat.h
Generates the 'smallest' (geodesic) rotation between two normals (assumed to be unit length).
static [TQuat](API\Runtime\Core\Math\TQuat)< T > FindBetweenNormals ( const [TVector](API\Runtime\Core\Math\TVector)< T > & Normal1, const [TVector](API\Runtime\Core\Math\TVector)< T > & Normal2 )